7885 results about "Hot pressing" patented technology

The present invention relates to a contour accuracy compensation method and system for a precision hot-press forming mold. The method comprises: delineating grids on a three-dimensional model of a hot-press forming mold to obtain mold surface grid data; performing curvature analysis to obtain a high-curvature region and a low-curvature region; performing high-density sampling on the high-curvature region, and performing low-density sampling on the low-curvature region, so as to obtain a sampling point set; using a coordinate measuring machine to perform three-dimensional coordinate measurement on the sampling point set to obtain surface contour data; performing comparative analysis on the surface contour data and a theoretical model to obtain a contour error distribution; on the basis of the contour error distribution, using an inverse distance weighted interpolation algorithm to perform interpolation operation on an entire mold surface to obtain a mold surface compensation amount distribution; and on the basis of the mold surface compensation amount distribution, correcting the three-dimensional model of the hot-press forming mold to generate a compensated mold processing model. The implementation of the present invention realizes intelligent and automated contour accuracy compensation.

The invention provides a PHA dispersion emulsion as well as a preparation method and application thereof, and belongs to the field of high polymer materials. The invention aims to solve the technical problem that the prior art cannot simultaneously meet the requirements of the polyhydroxyalkanoate water dispersion system on extremely low temperature natural film-forming property, excellent comprehensive performance after film formation and long-term storage stability. The method is characterized in that a polyhydroxyalkanoate polymer with specific molecular weight and polydispersity index range, a coalescing agent 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate with a specific chemical structure and a specific type of aliphatic polyisocyanate cross-linking agent compatible with water dispersion are strictly limited and combined. Through the synergistic effect generated by the unique ternary combination, the minimum film forming temperature of the prepared emulsion can be reduced to 6-10 DEG C, a film can be naturally formed without hot pressing, and the formed film has excellent mechanical property, water resistance and adhesive force and has excellent storage stability of at least one year.

The invention discloses a low-creep polytetrafluoroethylene composite material and a preparation method thereof, the low-creep polytetrafluoroethylene composite material comprises the following raw materials by weight: 50-60 parts of polytetrafluoroethylene, 35-45 parts of perfluoroalkoxy resin, 15-25 parts of modified composite fiber, and 1-2 parts of a lubricant. Polytetrafluoroethylene and perfluoroalkoxy resin are blended according to a specific proportion to serve as a base material, a hot press molding process is matched, the core performance of the material is guaranteed, the molten perfluoroalkoxy resin can fully infiltrate and wrap the surface of the modified composite fiber under the driving of hot press pressure, and the performance of the composite fiber is improved. The composite material has the advantages that the composite material is high in mechanical strength, can form strong interface combination with PTFE (polytetrafluoroethylene) framework particles, can permeate and fill gaps of the PTFE framework particles, eliminates internal pores through a welding effect, and finally forms a highly-compact whole, so that the creep resistance of the composite material is remarkably improved.

The invention relates to a composite solid electrolyte membrane with high ceramic content and a preparation method and application thereof. The preparation method comprises the following steps: mixing ceramic solid electrolyte particles activated by a silane coupling agent with an in-situ polymerization solution containing a cross-linking agent, an organic monomer, a plasticizer, a lithium salt, an ultraviolet light initiator and a thermal initiator to form solid electrolyte slurry, wherein the ceramic solid electrolyte particles account for 60-90% of the total mass of the composite solid electrolyte membrane; the preparation method comprises the following steps: coating a positive pole piece with solid electrolyte slurry, initiating shallow organic matter monomers and a cross-linking agent to generate in-situ polymerization through an ultraviolet light initiator, covering a negative pole piece for hot pressing treatment, initiating residual organic matter monomers and the cross-linking agent to generate in-situ polymerization through a thermal initiator, and forming a composite electrolyte membrane with high ceramic content. The invention also discloses an all-solid-state battery containing the composite solid electrolyte membrane. The solid-state battery containing the in-situ formed composite solid-state electrolyte membrane has relatively high cycling stability.

The preparation method comprises the following steps: S1, mixing a hydrochloric acid solution with organic sodium sulfonate, then adding aniline and water, stirring and dissolving, then adding an oxidizing agent to carry out doping reaction, and carrying out suction filtration, washing, drying and grinding on a reaction product to obtain sodium-modified polyaniline; s2, uniformly mixing a negative electrode active material, a conductive agent and polytetrafluoroethylene, and then adding sodium polyaniline and an organic sodium supplement agent in a nitrogen or inert atmosphere for fibration treatment to obtain fibration powder; and S3, performing hot pressing on the fiberized powder onto the current collector to obtain the lithium ion battery. The prepared pre-sodium-modified negative electrode dry-method electrode has relatively good peeling strength and pole piece flexibility, and the condition that a traditional wet-method thick electrode is easy to crack is relieved; meanwhile, the dry-method electrode subjected to sodium modification treatment can induce uniform deposition of sodium ions, so that the dynamic performance of the whole sodium battery is improved, the problem of cyclic sodium precipitation is avoided, and the service life of the battery is further prolonged.

The invention relates to the technical field of sealing ring hot-press forming, discloses sealing ring hot-press forming equipment, and aims to solve the problems of low finished product taking-out and mold cleaning efficiency and low automation degree in the prior art. The equipment comprises a hot press base, a hot press base and a lower die which are arranged on the hot press base, and a hot press plate and an upper die which are arranged above the hot press base in a lifting manner. The pushing part and the scraping part which work in a linkage mode are arranged, and the pushing part comprises a lifting supporting and pushing piece driven by an electric rod and a top ring and is used for upwards ejecting out a sealing ring formed in a lower mold; the scraping part comprises a rotation guiding part for enabling the supporting and pushing part to rotate during ascending and descending and a silica gel scraper which is elastically connected to the top ring and can be unfolded in the ejection process, and when the electric rod drives the pushing part to ascend to eject out the sealing ring, the rotation guiding part enables the pushing part to integrally rotate, the silica gel scraper is driven to be tightly attached to and scrape the inner wall of the lower mold, and residual rubber is scraped; the production cycle is shortened, and the production efficiency and the automation level are improved.

The invention discloses a hot-pressing control method and system for a flexible circuit board, and particularly relates to the technical field of flexible electronic manufacturing process control, and the method comprises the following steps: calculating a heat conduction equilibrium coefficient through collecting the temperature and heat flux density data of each region in the flexible circuit board, and achieving the real-time evaluation of a heat diffusion characteristic; in combination with an infrared scanning mode, acquiring reflectivity data, analyzing dynamic change of the reflectivity data along with time, and identifying an abnormal region in which coating residues possibly exist; further comparing the position relationship between the thermal diffusion anomaly and the infrared reflection anomaly, screening a space overlapping region as a high-risk point, and executing a preset regulation and control strategy; according to the method, the heat conduction equilibrium coefficient is calculated by collecting heat flow and temperature data, the coating residue abnormal area is recognized by combining infrared reflectivity time sequence characteristics, the high-risk area is screened based on the space overlap ratio for dynamic regulation and control, accurate recognition, differential control and closed-loop optimization of hot pressing defects are achieved, and the hot pressing quality and consistency are improved.

The invention discloses a high-interface-stability composite solid electrolyte membrane as well as a preparation method and application thereof. The composite solid electrolyte membrane comprises a gradient aperture three-dimensional porous skeleton formed by sintering inorganic solid electrolyte particles, a polymer electrolyte filled in a pore channel, and a plastic interface stable layer positioned between the electrolyte membrane and an electrode. The preparation method comprises the following steps: preparing a gradient aperture porous framework through a pore-forming agent template method and a tape casting technology, dipping and filling a polymer electrolyte precursor solution in a solution, accelerating in-situ polymerization by adopting electric induction, and performing hot-pressing treatment. The composite solid-state electrolyte membrane has high ionic conductivity, excellent interface compatibility and high mechanical strength, can effectively inhibit the growth of lithium dendrites, can be applied to solid-state batteries such as lithium metal batteries, lithium sulfur batteries and lithium air batteries, and can remarkably prolong the cycle life and improve the safety performance of the batteries, and the preparation process is suitable for large-scale production.

The invention provides an aviation composite material hot-press forming workpiece loading method based on a hybrid optimization algorithm. The method comprises the steps that workpiece demand information and autoclave platform information in composite material hot-press forming manufacturing are obtained; minimizing the opening times of the autoclave as a target function; establishing a two-dimensional multi-layer platform hot press molding workpiece loading model, defining space constraints, distribution constraints, resource constraints and type constraints among workpieces, and incorporating the constraints into model constraint conditions; a GA-SP is adopted to optimize a workpiece loading sequence and a rotation state, an optimal layout is generated through chromosome coding, decoding, selection, intersection and mutation operations, a hybrid optimization algorithm is constructed in combination with a neighborhood search strategy, efficient arrangement of workpieces on different platforms is realized in combination with a simulated annealing criterion, and an optimized loading scheme is output. The production efficiency of the hot press molding procedure can be improved, the manufacturing cost is reduced, and efficient technical support is provided for intelligent manufacturing of aviation composite materials.

The invention discloses a thermoplastic composite material T-shaped rib forming mold and a using method thereof, and belongs to the technical field of T-shaped rib forming machining. The thermoplastic composite material T-shaped rib forming mold comprises an L-shaped piece shaping mold and a T-shaped rib curing mold; the L-shaped piece shaping mold comprises a shaping mold side pressing block, a shaping mold rectangular block is arranged on one side of the shaping mold side pressing block, a shaping mold upper pressing block is arranged above the shaping mold rectangular block, and the shaping mold upper pressing block is vertically connected to the shaping mold side pressing block in a sliding mode. The T-shaped rib is decomposed into the two L-shaped pieces, the flat plate and the plug, the L-shaped pieces are subjected to hot-pressing shaping through the L-shaped piece shaping mold, the multiple layers of thermoplastic prepregs only need to be laid and fixed to the shaping mold in order according to the laying sequence, layer-by-layer welding is not needed, and the manufacturing period is shortened.

The invention discloses a preparation method of a high-temperature-resistant high-strength polyimide composite material, and relates to the technical field of polyimide composites.The preparation method comprises the following preparation steps that S1, a customized silane coupling agent is prepared; s2, preparing a bionic dynamic interface modified reinforcing filler, wherein the modified reinforcing filler is synergistically modified through a bionic coating and a customized silane coupling agent; and S3, preparing a polyimide precursor solution containing the dynamic network. According to the preparation method of the high-temperature-resistant high-strength polyimide composite material, through the integrated design of'customized silane coupling agent + bionic dynamic interface modification + dynamic network-containing polyimide precursor + gradient hot-pressing curing ', the glass-transition temperature of the prepared composite material is greater than or equal to 335 DEG C, the tensile strength is greater than or equal to 208 MPa, and meanwhile, the thermal repair efficiency at 180-250 DEG C is greater than or equal to 87%; the technical bottleneck that high temperature resistance, mechanical strength and repairing performance of the material are difficult to consider at the same time in the prior art is solved.

The invention discloses environment-friendly high-barrier packaging paper and a preparation method thereof, and belongs to the technical field of paper product manufacturing. The method comprises the following steps: dispersing bleached sulfate softwood pulp in an aqueous solution of TEMPO and NaBr, adding a NaClO solution, adjusting the pH value, carrying out a reaction, washing the product obtained by the reaction, and carrying out high-pressure homogenization to obtain TEMPO oxidized nanocellulose (TOCNF); mixing the bleached sulfate softwood chemical pulp, hardwood pulp and viscose fibers, pulping, papermaking and the like to obtain original paper; then, TOCNF and waterborne epoxy modified acrylic emulsion are mixed, and a mixed coating is prepared; and finally, coating the surface of original paper with the coating according to a certain mass ratio, and carrying out hot-pressing curing to obtain the environment-friendly high-barrier packaging paper. The packaging paper is excellent in mechanical property, high in barrier property, good in surface uniformity and printing property, environment-friendly and degradable in raw materials, simple to prepare and low in cost.

The invention relates to the technical field of high-entropy ceramic preparation, and particularly discloses (TiZrNbHfTaV) C-SiC high-entropy composite ceramic as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing the (TiZrNbHfTaV) C-SiC high-entropy composite ceramic consisting of double phases of (TiZrNbHfTaV) C and SiC by adopting a rapid hot pressed sintering technology. The preparation process is simple and efficient, and large-scale industrial application is facilitated; the prepared multiphase ceramic is high in density, uniform in organization structure and reasonable in component design, the multiphase ceramic shows excellent mechanical properties, and the hardness, the fracture toughness and the wear rate are 34.00 GPa, 6.4 MPa.m < 1 / 2 > and 1.8 * 10 <-6 > mm < 3 > N <-1 > m <-1 > respectively. Compared with the traditional binary carbide ceramic, the (TiZrNbHfTaV) C-SiC high-entropy composite ceramic disclosed by the invention has excellent hardness and toughness, and the friction and wear properties are remarkably improved.

The invention discloses a mold partition temperature control system based on an air film adjustable thermal resistance boundary, and belongs to the technical field of mold temperature control and thermal management. The system comprises a mold body, at least two temperature control subareas and gas film adjustable thermal resistance boundary units arranged between the adjacent temperature control subareas. The air film adjustable thermal resistance boundary unit comprises a boundary air cavity, an air injection micropore, an exhaust adjusting structure and an air supply unit. Gas enters the partition boundary area through the gas injection micropores and forms a gas film layer, and the thickness, continuity, stability and coverage range of the gas film layer are changed by adjusting the gas supply pressure, the gas supply flow and the exhaust resistance, so that the thermal coupling strength between the adjacent temperature control partitions is adjusted. The system is suitable for injection molding, pressure casting, hot pressing and composite material forming molds.

The invention relates to the technical field of alloy preparation, and particularly discloses a preparation method and application of an atomic-scale oxide dispersion strengthened alloy, and the preparation method comprises the following steps: atomic-scale metal Y cluster powder is put into an oxidation device for oxidation treatment, and atomic-scale Y2O3 cluster powder is obtained; s2, weighing a plurality of alloy powder, mixing the alloy powder with the atomic-scale Y2O3 cluster powder prepared in the step S1, and fully mixing the mixture by adopting acoustic resonance equipment to obtain alloyed powder; the alloyed powder in S2 is pressed and formed through hot pressing sintering equipment, and the atomic-scale oxide dispersion strengthened alloy is prepared; according to the preparation method, the atomic-scale Y cluster powder and the Y2O3 cluster powder are accurately prepared in the early stage, efficient preparation of the atomic-scale oxide dispersion strengthened alloy can be achieved, the core technical problems that in the traditional technology, oxide dispersion phases are prone to agglomeration and uneven in distribution in a matrix are solved, and the preparation method is suitable for industrial production. And the preparation quality and the performance stability of the oxide dispersion strengthened alloy are remarkably improved.

The invention discloses a reinforced composite PCB and a preparation method thereof, and belongs to the technical field of PCB preparation. The preparation method of the reinforced composite PCB comprises the following steps: step 1, processing an inner-layer core board to obtain a preprocessed inner-layer core board; 2, cutting, drilling and activating the modified composite film to obtain a treated modified composite film; and 3, sequentially carrying out stacking, hot pressing treatment, pressure relief, cooling, drilling, hole metallization treatment, outer layer pattern transfer, pattern electroplating, outer layer etching, resistance welding, surface treatment, molding and testing on a copper foil, a prepreg, the pretreated inner layer core plate, the prepreg, the treated modified composite film, the prepreg, the pretreated inner layer core plate, the prepreg and the copper foil. And the composite PCB is obtained. The circuit board prepared by the method has excellent thermal stability and mechanical properties.

The invention discloses a composite material T-shaped beam forming method in the technical field of aviation, a forming die, a laying die and a bottom face forming die which are arranged in a split mode and can be combined are adopted, forming is conducted through a secondary hot-pressing curing process, and the method comprises the following steps that S1, preforming and R corner prefabricating are conducted, the independently-prefabricated prepreg core material is positioned in a T-shaped beam R-angle area formed after the prepreg core material and the T-shaped beam R-angle area are oppositely combined; and S2, first-time mold closing and pre-curing are carried out, specifically, the laying mold and the forming mold are oppositely closed, lateral auxiliary positioning is carried out through the bottom face forming mold, locking and fixing are carried out through a positioning pin and a clamping piece, and first-time hot-pressing curing is carried out on a combined body obtained after mold closing. According to the method, the independently prefabricated core material which is subjected to heat-sealing, pressing and pre-curing is filled in the R-angle area, and a secondary hot-pressing process of pre-curing and final curing is matched, so that sufficient pressure transmission and tight laying of the R-angle area are ensured, the defects of layering, bridging and the like are effectively avoided, and the percent of pass of nondestructive testing of products is remarkably improved.

The invention relates to the field of composite material ultrathin laminated plates, in particular to a preparation method of a SiC fiber reinforced Ti-based composite material ultrathin laminated plate. The method comprises the following steps: plating Ti alloy on the surface of SiC fiber by using a physical vapor deposition method; the titanium alloy foil is subjected to acid pickling to remove a surface oxide layer and impurities; the plated fibers are tightly arranged to form a SiCf / Ti alloy plate, the upper surface and the lower surface of the SiCf / Ti alloy plate are bonded to a titanium alloy foil through an adhesive, and a foil-plate-foil prefabricated body is manufactured; sealing the periphery of the prefabricated body, covering gaskets on the upper surface and the lower surface of the prefabricated body, removing the adhesive from the prefabricated body, and placing the prefabricated body in a vacuum hot-pressing mold; and a hot-pressing process is adopted to realize densification composite molding of the laminated plate. According to the method, uniform distribution of SiC fibers is achieved, the mechanical property of the material is effectively improved, the surface flatness is good after the laminated plate is prepared, and the method is suitable for weight reduction application of aerospace structural parts such as skins and reinforcing ribs.

The utility model discloses a heat-sealing and heat-cutting mechanism of a bag making machine. The heat-sealing and heat-cutting mechanism comprises a rack, the heat sealing mechanism is arranged on the rack; the hot cutting mechanism is arranged on the rack; the movable installation base is slidably installed on the rack, and a strip-shaped operation opening is formed in the middle of the movable installation base. The air cylinder is arranged on the rack and used for driving the movable mounting base to move repeatedly. The pressing platform is arranged on the movable mounting seat and is used for pressing to be in contact with the plastic film; according to the bag making machine, the downward pressing platform is started to make contact with the plastic film, and the heat sealing mechanism is started to penetrate through the operation opening to conduct hot pressing on the plastic film; the negative pressure adsorption assembly is started to adsorb the plastic film to the downward pressing platform, the first electric cylinder is started to drive the movable mounting base to move to the hot cutting station along with the plastic film, the situation that the position of the plastic film is prone to deviation in the conveying process is avoided, and the accuracy of the hot cutting position is guaranteed.

The invention belongs to the technical field of electrochemical energy storage, and discloses a composite bipolar plate for a zinc-bromine flow battery and a preparation method thereof.The preparation method comprises the steps that carbon fibers, ketjen black and graphene dispersion liquid are stirred to be uniform, and a conductive carbon composite material is obtained; a binder, a dispersing agent and the conductive carbon composite material are subjected to ball milling, and a bipolar plate prefabricated material is obtained; carrying out melt blending on the bipolar plate prefabricated material, and extruding to obtain a substrate; and spraying the nitrogen-doped porous carbon material on the surface of a substrate, and performing hot pressing. The graphene, the carbon fibers and the ketjen black are stirred and compounded, the carbon fibers and the ketjen black enter the space between graphene sheet layers, and the ketjen black is attached to the surfaces of the carbon fibers and the graphene, so that the structure not only can prevent the graphene from generating a re-stacking effect in the mixing process, but also can form a'point-line-surface 'ternary interpenetrating high-conductivity network, so that the conductivity of the graphene is improved. According to the preparation method disclosed by the invention, the deposition uniformity of zinc is improved, so that the voltage efficiency and the cycling stability of the battery are improved.

The invention discloses a method for retarding black spot wrinkles of a PMMA (Polymethyl Methacrylate) gluing diaphragm lithium battery pole piece, which comprises the following steps: S1, adjusting parameters of a winding machine, adjusting the distance between pole pieces and tabs according to different parameters, and winding a battery cell; s2, performing hot pressing on the wound roll core by using different hot pressing parameters; s3, the hot-pressed roll core is assembled, put into a shell and fully charged in a capacity grading mode; wherein the parameter of the winding machine is embossing pressure; the hot pressing parameters comprise temperature, pressure and time. Therefore, by selecting the most appropriate embossing pressure and hot pressing parameter, black spots and wrinkles on the lithium battery interface of the PMMA glued diaphragm can be relieved, so that the electrochemical performance and the safety performance of the battery are improved.

The invention relates to the technical field of 3D printing, and discloses a fiber reinforced composite material 3D printer and a printing method, current deposition tows are heated / cooled under the action of a preset interlayer pressing force through an interlayer pressing device, interlayer fusion can be promoted, the interlayer bonding strength can be improved, the heat history in the wire cooling process can be eliminated, and the 3D printing quality of the fiber reinforced composite material is improved. The crystallization behavior, the grain size and the grain distribution of a polymer in a printing wire material are controlled, and the microscopic uniformity of a composite material printing product is improved. The side face and the upper surface of the current deposition tow are subjected to hot-pressing shaping through the inter-channel pressing device, meanwhile, secondary hot-pressing is conducted on the adjacent printing layer deposition tow, resin of the current deposition tow and resin of the adjacent printing layer deposition tow can be melted and flow, so that the inter-channel gap between the adjacent printing layers is filled, and the printing effect is improved. And the inter-track bonding strength is improved.

The invention relates to the technical field of engineering plastic detection, and particularly discloses an aging detection and evaluation method and system suitable for nylon 6 in a marine environment, the system comprises nylon 6 as a core layer, an aging response color-changing material as a surface layer and a middle layer located between the core layer and the surface layer; the thickness of the middle layer is 200-250 [mu] m, and the composite conductive film is transferred to the position 0.2 mm below the surface of the nylon 6 component in a hot pressing mode; the thickness of the surface layer is 0-200 microns and is realized by spraying an aging response color-changing material solution. By integrating the specially designed aging response color-changing material and the conductive film into the nylon 6 matrix, real-time, visual and efficient detection of the aging process is realized. According to the method, the problem that equipment such as a traditional optical fiber spectrometer is complex and expensive is solved, the convenience of field detection is greatly improved through double signal output of color gradient indication and simple electronic reading, and a brand new technical solution is provided for life prediction and preventive maintenance of nylon 6 components in ocean engineering.

The invention discloses a rare earth metal ceramic and a preparation method thereof, and belongs to the technical field of metal ceramic preparation, the rare earth metal ceramic comprises, by mass, 45-65% of a ceramic phase, 30-50% of a metal binding phase and 3-8% of a rare earth additive, the ceramic phase is composed of one of TiC and WC and one of Al2O3 and ZrO2, the metal binding phase is composed of a Ni-Co alloy and Mo or Cr, and the rare earth additive is composed of one of Al2O3 and ZrO2. The rare earth additive is composed of mixed rare earth oxide and nano rare earth fluoride. The invention further provides a preparation method of the rare earth additive. Through the synergistic effect of oxide grain boundary purification and fluoride liquid phase sintering in a two-phase rare earth system, the problem that traditional single rare earth is difficult to add and disperse is solved, through staged hot pressing sintering, dual optimization of grain refinement and density improvement is achieved, and the high-temperature oxidation resistance and interface bonding strength of metal ceramic are enhanced.

An integrated structure pickleball paddle and a preparation process thereof are provided, where the pickleball paddle includes a paddle body, an edge banding, and a handle, where the edge banding and the paddle body are fused into an integrated structure by hot pressing, where the material of the edge banding is a modified TPU composite material, where the modified TPU composite material includes the following raw materials in parts by mass: 90-100 parts of modified TPU, 9-14 parts of polyvinyl fluoride, 20-30 parts of epoxy resin, 10-20 parts of ABS resin, 5-10 parts of modified nano-silicon dioxide, 0.3-0.6 parts of antioxidant, 0.2-0.5 parts of fluidity aid, 4-9 parts of 4,4′-methylene-bis(2-chloroaniline), and 3-7 parts of silicone oil. The edge banding and the paddle body are hot pressed and fused into an integrated structure, the edge banding will not fall off, and the comprehensive performance of the edge banding is better.

The invention discloses a dry-method electrode film rolling compounding method and dry-method electrode film rolling equipment. The method comprises the following steps: leading out a current collector film from an unpowered unreeling shaft, forming a suspension arc by virtue of self weight, and penetrating through a first roller gap; synchronously unrolling the two dry-method electrode films in an unpowered manner, so that the two dry-method electrode films enter the first roller gap in a self-weight overhanging state and are attached to the two surfaces of the current collector film to form an initial complex; coating the outer side of the initial complex with an isolating membrane to obtain a to-be-heated complex, and enabling the to-be-heated complex to enter a second roller gap after the to-be-heated complex is overhung by self weight; the to-be-heated composite body is subjected to hot-pressing compounding through compounding rollers on the two sides of the second roller gap; and then stripping the isolating membrane and rolling the double-sided dry-method pole piece. According to the method, near-zero tension conveying is achieved through natural suspension, and by matching with isolation film wrapping and one-time double-face pressing of the hot-pressing roller, edge micro-cracking and whole belt breakage of the dry-method electrode film can be effectively avoided, and the interface density and the roll-to-roll production yield are improved.

The utility model relates to the field of high polymer materials, in particular to a polyaryletherketone resin pre-impregnated line material winding and forming device which is used for preparing polyaryletherketone resin pre-impregnated line materials and comprises a translation table top, a material impregnating groove, a guide column and a tensioning pulley. According to the present invention, with the structural design such as a driving system and the like, the carbon fiber can be immersed in the polyaryletherketone resin at low cost and high efficiency to obtain the sheet-shaped prepreg, the sheet-shaped prepreg is subjected to hot pressing to form the polyaryletherketone resin-based composite material of the fiber fabric, and the composite material has characteristics of excellent strength, wide application, and easy promotion and application. Wide application prospects are realized in the fields of aviation, aerospace equipment and high-end civil use.

The invention discloses a double-component reinforced 5Y-PSZ dental ceramic material and a preparation method thereof, and relates to the technical field of ceramic material preparation. The method comprises the following steps: mixing ZrCl4 and deionized water, and dropwise adding an ammonia water solution to prepare m-ZrO2 nano ceramic powder; zrOCl2. 8H2O, Y (NO3) 3.6 H2O and deionized water are mixed, the m-ZrO2 nano ceramic powder and polyethylene glycol 2000 are added, and the material is prepared through calcination, spray granulation, hot-pressing presintering and high-temperature sintering. According to the 5Y-PSZ dental ceramic material disclosed by the invention, the nano-scale m-phase ZrO2 is adopted as a reinforcing material and is dispersed and distributed inside the 5Y-PSZ, and through volume expansion generated by t-m phase change of the m-phase ZrO2, the anti-aging performance is guaranteed, and meanwhile, the reinforcement of the 5Y-PSZ dental ceramic material is realized. The invention solves the problem of insufficient strength of the 5Y-PSZ dental ceramic material in the prior art.

The invention discloses a cellulose paper-based diaphragm for a zinc-iodine battery as well as a preparation method and application of the cellulose paper-based diaphragm. The diaphragm is of a three-layer composite structure and comprises a matrix layer formed by paper pulp fibers such as softwood pulp, hardwood pulp, bamboo pulp or straw pulp through a wet papermaking technology, and compact functional layers which cover the two sides of the matrix layer and are formed by oxidized nanocellulose (TOCN). The preparation method mainly comprises the following steps: preparing the paper-based diaphragm matrix through wet papermaking, coating the two sides of the paper-based diaphragm matrix with TOCN aqueous dispersion, and finally carrying out hot-pressing drying treatment to enable the three layers to be tightly combined. According to the invention, the nano aperture and the surface negative electricity functional group of the TOCN layer are utilized, so that physical blocking and electrostatic repulsion of polyiodide ions can be realized at the same time, and the shuttle effect is effectively inhibited; and the uniform pore channels can guide zinc ions to uniformly deposit and inhibit dendritic crystal growth. The diaphragm is green in raw material, simple in process and low in cost, and the cycle life and coulombic efficiency of the battery can be remarkably improved when the diaphragm is applied to the zinc-iodine battery.

A steel sheet has a chemical composition including in wt % C: 0.2-0.4%, Mn: 0.8-2.0%, Si: 0.1-0.5%, Al: 0.01-0.1%, Ti: 0.01-0.1%, B: 0.0005-0.005%, P≤0.040%, Ca≤0.01%, S≤0.006%, N≤0.01%. The steel sheet includes from the bulk to the surface of the coated steel sheet a bulk and a skin layer occupying the outermost 10% of the thickness on either side of the bulk. The bulk includes an inclusion population in which the sum of clustering indexes of MnS and TiN / Ti(C,N) inclusions is less than or equal to 300 μm / mm2. This allows to manufacture hot pressed parts having a tensile strength equal to or greater than 1300 MPa and a bending anisotropy equal to or lower than 7°.